diff options
Diffstat (limited to 'dlfcn')
| -rw-r--r-- | dlfcn/Makefile | 3 | ||||
| -rw-r--r-- | dlfcn/Versions | 3 | ||||
| -rw-r--r-- | dlfcn/dlfcn.h | 17 | ||||
| -rw-r--r-- | dlfcn/dlinfo.c | 5 | ||||
| -rw-r--r-- | dlfcn/dlmopen.c | 69 | ||||
| -rw-r--r-- | dlfcn/dlopen.c | 13 | ||||
| -rw-r--r-- | dlfcn/dlopenold.c | 12 |
7 files changed, 114 insertions, 8 deletions
diff --git a/dlfcn/Makefile b/dlfcn/Makefile index 8ac1c20648..4330a8a59d 100644 --- a/dlfcn/Makefile +++ b/dlfcn/Makefile @@ -19,7 +19,8 @@ subdir := dlfcn headers := bits/dlfcn.h dlfcn.h extra-libs := libdl -libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr dladdr1 dlinfo +libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr dladdr1 dlinfo \ + dlmopen distribute := dlopenold.c glreflib1.c glreflib2.c failtestmod.c \ defaultmod1.c defaultmod2.c errmsg1mod.c modatexit.c \ modcxaatexit.c modstatic.c \ diff --git a/dlfcn/Versions b/dlfcn/Versions index 95ede25e47..6a41c238aa 100644 --- a/dlfcn/Versions +++ b/dlfcn/Versions @@ -8,4 +8,7 @@ libdl { GLIBC_2.3.3 { dladdr1; dlinfo; } + GLIBC_2.3.4 { + dlmopen; + } } diff --git a/dlfcn/dlfcn.h b/dlfcn/dlfcn.h index 9d8ee0d6d1..9383c230dc 100644 --- a/dlfcn/dlfcn.h +++ b/dlfcn/dlfcn.h @@ -1,5 +1,5 @@ /* User functions for run-time dynamic loading. - Copyright (C) 1995-1999,2000,2001,2003 Free Software Foundation, Inc. + Copyright (C) 1995-1999,2000,2001,2003,2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -39,6 +39,14 @@ the run-time address of the symbol called NAME in the global scope is returned. */ # define RTLD_DEFAULT ((void *) 0) + + +/* Type for namespace indeces. */ +typedef long int Lmid_t; + +/* Special namespace ID values. */ +# define LM_ID_BASE 0 /* Initial namespace. */ +# define LM_ID_NEWLM -1 /* For dlmopen: request new namespace. */ #endif @@ -58,6 +66,9 @@ extern void *dlsym (void *__restrict __handle, __const char *__restrict __name) __THROW; #ifdef __USE_GNU +/* Like `dlopen', but request object to be allocated in a new namespace. */ +extern void *dlmopen (Lmid_t __nsid, __const char *__file, int __mode) __THROW; + /* Find the run-time address in the shared object HANDLE refers to of the symbol called NAME with VERSION. */ extern void *dlvsym (void *__restrict __handle, @@ -114,6 +125,9 @@ extern int dlinfo (void *__restrict __handle, /* These are the possible values for the REQUEST argument to `dlinfo'. */ enum { + /* Treat ARG as `lmid_t *'; store namespace ID for HANDLE there. */ + RTLD_DI_LMID = 1, + /* Treat ARG as `struct link_map **'; store the `struct link_map *' for HANDLE there. */ RTLD_DI_LINKMAP = 2, @@ -130,7 +144,6 @@ enum expand $ORIGIN in this shared object's dependency file names. */ RTLD_DI_ORIGIN = 6, - RTLD_DI_LMID = 1, /* Unsupported, defined by Solaris. */ RTLD_DI_CONFIGADDR = 3 /* Unsupported, defined by Solaris. */ }; diff --git a/dlfcn/dlinfo.c b/dlfcn/dlinfo.c index 7e7f1c759b..4e755ad044 100644 --- a/dlfcn/dlinfo.c +++ b/dlfcn/dlinfo.c @@ -55,12 +55,15 @@ RTLD_SELF used in code not dynamically loaded")); switch (args->request) { - case RTLD_DI_LMID: case RTLD_DI_CONFIGADDR: default: GLRO(dl_signal_error) (0, NULL, NULL, N_("unsupported dlinfo request")); break; + case RTLD_DI_LMID: + *(Lmid_t *) args->arg = l->l_ns; + break; + case RTLD_DI_LINKMAP: *(struct link_map **) args->arg = l; break; diff --git a/dlfcn/dlmopen.c b/dlfcn/dlmopen.c new file mode 100644 index 0000000000..fb2a50bb1d --- /dev/null +++ b/dlfcn/dlmopen.c @@ -0,0 +1,69 @@ +/* Load a shared object at run time. + Copyright (C) 1995,96,97,98,99,2000,2003,2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <dlfcn.h> +#include <errno.h> +#include <libintl.h> +#include <stddef.h> +#include <ldsodefs.h> + +struct dlmopen_args +{ + /* Namespace ID. */ + Lmid_t nsid; + /* The arguments for dlopen_doit. */ + const char *file; + int mode; + /* The return value of dlopen_doit. */ + void *new; + /* Address of the caller. */ + const void *caller; +}; + +static void +dlmopen_doit (void *a) +{ + struct dlmopen_args *args = (struct dlmopen_args *) a; + + /* Non-shared code has no support for multiple namespaces. */ + if (args->nsid != LM_ID_BASE) +#ifdef SHARED + /* If trying to open the link map for the main executable the namespace + must be the main one. */ + if (args->file == NULL) +#endif + GLRO(dl_signal_error) (EINVAL, NULL, NULL, N_("invalid namespace")); + + args->new = _dl_open (args->file ?: "", args->mode | __RTLD_DLOPEN, + args->caller, args->nsid); +} + + +void * +dlmopen (Lmid_t nsid, const char *file, int mode) +{ + struct dlmopen_args args; + args.nsid = nsid; + args.file = file; + args.mode = mode; + args.caller = RETURN_ADDRESS (0); + + return _dlerror_run (dlmopen_doit, &args) ? NULL : args.new; +} +static_link_warning (dlmopen) diff --git a/dlfcn/dlopen.c b/dlfcn/dlopen.c index 4ebfb0c5b4..cfd7963545 100644 --- a/dlfcn/dlopen.c +++ b/dlfcn/dlopen.c @@ -1,5 +1,5 @@ /* Load a shared object at run time. - Copyright (C) 1995,96,97,98,99,2000,2003 Free Software Foundation, Inc. + Copyright (C) 1995,96,97,98,99,2000,2003,2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -31,13 +31,22 @@ struct dlopen_args const void *caller; }; + +/* Non-shared code has no support for multiple namespaces. */ +#ifdef SHARED +# define NS __LM_ID_CALLER +#else +# define NS LM_ID_BASE +#endif + + static void dlopen_doit (void *a) { struct dlopen_args *args = (struct dlopen_args *) a; args->new = _dl_open (args->file ?: "", args->mode | __RTLD_DLOPEN, - args->caller); + args->caller, args->file == NULL ? LM_ID_BASE : NS); } diff --git a/dlfcn/dlopenold.c b/dlfcn/dlopenold.c index b83d64d91d..f10674aba3 100644 --- a/dlfcn/dlopenold.c +++ b/dlfcn/dlopenold.c @@ -1,5 +1,5 @@ /* Load a shared object at run time. - Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc. + Copyright (C) 1995-1999, 2000, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -37,13 +37,21 @@ struct dlopen_args }; +/* Non-shared code has no support for multiple namespaces. */ +#ifdef SHARED +# define NS __LM_ID_CALLER +#else +# define NS LM_ID_BASE +#endif + + static void dlopen_doit (void *a) { struct dlopen_args *args = (struct dlopen_args *) a; args->new = _dl_open (args->file ?: "", args->mode | __RTLD_DLOPEN, - args->caller); + args->caller, args->file == NULL ? LM_ID_BASE : NS); } extern void *__dlopen_nocheck (const char *file, int mode); |